[ Modal Verbs ]
Which sentence correctly expresses certainty about someone working at the library? “He ______ be working at the library.”
A. must
B. can’t
C. may
D. should

Random Topics:
Past Continuous Tense & Past ModalsTenses PracticePast Perfect TenseModal Verbs and ConditionalsVerb Patterns / IngPast form of ModalsSubordinate ConjunctionsWill or Going toInversion + Passive VoicePhrases and TensesOther quiz:
Modal Verbs › ViewI ______ get up earliy. I have a lot to do.
A. should
B. must
C. don’t have to
D. mustn’t
Conditional Sentences › View
If Tung and Thanh (be) older, they would play in our football team
A. are
B. were
C. had been
Subordinating Conjunctions › ViewYou can wait here _______ I come.
A. until
B. when
C. because
D. after
another/the others/each other/one another › View
I have two close friends. One is English teacher and …….. is a doctor.
A. the other
B. the others
C. another
